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Title: An experimental investigation on acoustic emission characteristics of sandstone rockburst with different moisture contents

Abstract

Rockburst occurred frequently during deep mining in China. The mechanism of rockburst is very complicated and related to many factors. In order to investigate the influence of moisture contents of rockmass on rockburst, we conducted a series of laboratory rockburst experiments of sandstone under three different moisture contents by the Modified True-Triaxial Apparatus (MTTA), in which the acoustic emission (AE) system was employed to monitor the internal damage of rock mass. A high-speed video camera was utilized to record the detail of rockburst. Based on the experimental results, the AE characteristics, such as AE count, AE energy, and AE frequency, were analyzed. The rockburst process, type, and indensity under different moisture contents were discussed. The research results show that with the increase of moisture contents, rock strength was soften, the elastic and the cumulative damage of the rock were reduced, resulting in a gradual decrease in AE cumulative counts and cumulative energy over the course of rockburst. Finally, this study provides an experimental basis and reference for better understanding to the rockburst mechanism and control.

Authors:
 [1];  [2];  [3];  [1];  [1]
  1. China Univ. of Mining & Technology, Beijing (China). State Key Lab. for Geomechanics and Deep Underground Engineering
  2. China Univ. of Mining & Technology, Beijing (China). State Key Lab. for Geomechanics and Deep Underground Engineering, and School of Mechanics and Civil Engineering
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Geosciences Division
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1571929
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Science China Technological Sciences
Additional Journal Information:
Journal Volume: 59; Journal Issue: 10; Journal ID: ISSN 1674-7321
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; sandstone; rockburst; moisture contents; acoustic emission; mechanical characteristics

Citation Formats

Sun, XiaoMing, Xu, HuiChen, Zheng, LianGe, He, ManChao, and Gong, WeiLi. An experimental investigation on acoustic emission characteristics of sandstone rockburst with different moisture contents. United States: N. p., 2016. Web. doi:10.1007/s11431-016-0181-8.
Sun, XiaoMing, Xu, HuiChen, Zheng, LianGe, He, ManChao, & Gong, WeiLi. An experimental investigation on acoustic emission characteristics of sandstone rockburst with different moisture contents. United States. https://doi.org/10.1007/s11431-016-0181-8
Sun, XiaoMing, Xu, HuiChen, Zheng, LianGe, He, ManChao, and Gong, WeiLi. Mon . "An experimental investigation on acoustic emission characteristics of sandstone rockburst with different moisture contents". United States. https://doi.org/10.1007/s11431-016-0181-8. https://www.osti.gov/servlets/purl/1571929.
@article{osti_1571929,
title = {An experimental investigation on acoustic emission characteristics of sandstone rockburst with different moisture contents},
author = {Sun, XiaoMing and Xu, HuiChen and Zheng, LianGe and He, ManChao and Gong, WeiLi},
abstractNote = {Rockburst occurred frequently during deep mining in China. The mechanism of rockburst is very complicated and related to many factors. In order to investigate the influence of moisture contents of rockmass on rockburst, we conducted a series of laboratory rockburst experiments of sandstone under three different moisture contents by the Modified True-Triaxial Apparatus (MTTA), in which the acoustic emission (AE) system was employed to monitor the internal damage of rock mass. A high-speed video camera was utilized to record the detail of rockburst. Based on the experimental results, the AE characteristics, such as AE count, AE energy, and AE frequency, were analyzed. The rockburst process, type, and indensity under different moisture contents were discussed. The research results show that with the increase of moisture contents, rock strength was soften, the elastic and the cumulative damage of the rock were reduced, resulting in a gradual decrease in AE cumulative counts and cumulative energy over the course of rockburst. Finally, this study provides an experimental basis and reference for better understanding to the rockburst mechanism and control.},
doi = {10.1007/s11431-016-0181-8},
journal = {Science China Technological Sciences},
number = 10,
volume = 59,
place = {United States},
year = {Mon Sep 19 00:00:00 EDT 2016},
month = {Mon Sep 19 00:00:00 EDT 2016}
}

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Cited by: 16 works
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